mirror of
https://github.com/dhewm/dhewm3.git
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93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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/*
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** WIN_GAMMA.C
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*/
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#include <assert.h>
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#include "win_local.h"
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#include "../../renderer/tr_local.h"
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static unsigned short s_oldHardwareGamma[3][256];
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/*
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** WG_GetOldGammaRamp
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**
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*/
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void WG_GetOldGammaRamp( void )
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{
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HDC hDC;
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hDC = GetDC( GetDesktopWindow() );
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GetDeviceGammaRamp( hDC, s_oldHardwareGamma );
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ReleaseDC( GetDesktopWindow(), hDC );
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/*
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** GLimp_SetGamma
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**
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*/
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void GLimp_SetGamma( unsigned char red[256], unsigned char green[256], unsigned char blue[256] )
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{
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unsigned short table[3][256];
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int i;
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if ( !glw_state.hDC )
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{
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return;
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}
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for ( i = 0; i < 256; i++ )
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{
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table[0][i] = ( ( ( unsigned short ) red[i] ) << 8 ) | red[i];
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table[1][i] = ( ( ( unsigned short ) green[i] ) << 8 ) | green[i];
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table[2][i] = ( ( ( unsigned short ) blue[i] ) << 8 ) | blue[i];
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}
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if ( !SetDeviceGammaRamp( glw_state.hDC, table ) ) {
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common->Printf( "WARNING: SetDeviceGammaRamp failed.\n" );
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}
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}
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/*
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** WG_RestoreGamma
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*/
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void WG_RestoreGamma( void )
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{
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HDC hDC;
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// if we never read in a reasonable looking
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// table, don't write it out
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if ( s_oldHardwareGamma[0][255] == 0 ) {
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return;
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}
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hDC = GetDC( GetDesktopWindow() );
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SetDeviceGammaRamp( hDC, s_oldHardwareGamma );
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ReleaseDC( GetDesktopWindow(), hDC );
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}
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